<!DOCTYPE html>
<script src="../include.js"></script>
<script>
    test(() => {
        let controller;
        new ReadableStream(
            {
                start(c) {
                    controller = c;
                }
            },
            new ByteLengthQueuingStrategy({ highWaterMark: 5 })
        );

        println(controller.desiredSize);
        controller.enqueue(new Uint8Array([1, 2, 3]));
        println(controller.desiredSize);
        controller.enqueue(new Uint8Array([1, 2, 3, 4, 5, 6, 7]));
        println(controller.desiredSize);
        controller.enqueue(new Uint8Array([1]));
        println(controller.desiredSize);
    });
</script>
